Automatic ejector and ventilator.



Fig.1]

- l 4 -PATENTED JULY 28,1908.

I ;L.-LAGNA-PIETT-A.'

AUTOMATIC EJEGTO'R AND VENTILATOR APPLICATION rim) 3312,2 190 f 5SHEETS'SHEET 1.

No- 894,671'. f 'PATENTED JULY 28, 1908. L. LAGNA-FIETTA.

AUTOMATIC EJEOTOR AND VENTILATOR.

' APPLICATION FILED FEB. 26, 19 06.

I 5 SHBETS-SH.EET 2.

.receive the lower ends of a frame 19.

LUDOVIOO LAGNA-FIETTA, OF TURIN, ITALY.

AUTOMATIC EJEGTOR AND VENTILATOR.

. Specification of Letters Patent.

Patented July 28, 1908 Application filed February 26, 1906. Serial No.302,861.

It is to be understood however, that I do notlimit myself to the use ofthe apparatus in connection with a car, as it may be applied tobuildings of various kinds.

Of the accompanying drawings :Figure 1 is a side elevation, partly insection of the' apparatus which is mounted above the roof of a car orother structure, said figure show- 5 ing the ejector located in anopening in the roof, and showing also the motor fan and mechanism whichoperates said ejector. Fig. 2 is similar to Fig. 1 but showing theejector, and the ventilating or circulating fan which is located belowthe roof within the car. Fig. 3 is'a view similar to Fig. 1 at a rightangle thereto. Fig. 4 is a plan view, on a smaller scale of the motorfan and sup ports. Fig. 5 is a sectional view of a modified structurehereinafter referred to. Fig.

6 is a plan of the bracket mounted across the opening in the roof. Fig.7 is a detail plan, on a reduced scale, of the roofring shown in Fig. 5.Fig. 8 is a view similar to, and on a larger scale than, the centralportion of Fig. 2, the parts being in the relative positions which theyoccupy when the. ventilator is operating. Fig. 9 is a similar view, theparts being shown in the relative positions which they occu y when outof operation. Fig. 10 is a detai sectional view on line 1010 of Fig. 8.

Similar reference characters indicate the same or similar parts in allof the views.

Referring first to the structure shown in Figs. 1, 2, 3, 4 and 6, adepending support 1 is shown as secured to the under side of the roof 1by suitable bolts 56. The said roof is formed with an opening 15 for theejector fan 4 which is employed to withdraw vitiated air. Mounted uponthe roof 1 are brackets 28, said brackets being formed as'socketss a1frame, as shown in Fig. 4, has four legs which 36, the upper end ofsaidshaft screws 29, (see Fig. 1) and a central portion through which passesthe upper end of a shaft 3. The lower end of said shaft (see Fig, 2) issupported by the socket 38 having a cone bearing 34 for said shaft.

A suitably formed bracket 33, crossing theopening in the roof, providesa support for the lower end of a fixed or stationary shaft assingthrough the frame 19 and through a b ock 37 mounted on said frame 19. Abracket 57 (see Figs. 1 and 3) is mounted to rotate about the upper endof the shaft 36 and is held in position by nuts 27 and 42, and issupported by a suitable ball bearing provided in or on the block 37 sothat said bracket 57 may revolve freely. Said bracket is formed withthree arms, each of said arms being screwed thereinto and locked by anut 42, and having a radially rojecting rod. One of said rods is rovidewith a curved wind shield 16, anot er with a vane 18, and the third witha balance weight 20'. The object of this construction is to cause thewind which is to drive the motor fan to be automatically shielded fromthe returning Wings or blades 17. Said wings or blades 17 are carried.by arms which project from the hub of a casting which is mounted torotate about the stationary shaft 36, and is formed with an inter nalgear wheel 25, which meshes with a pinion 25, (see Fig. 3) which inionis secured to the up er end of the sha t 33. It will now be un erstoodthat wind acting on wings 17,

will cause the shaft 3 and the ejector fan 4 to rotate at a'considerablyaccelerated speed. And at the same time the ventilating fan below theopening 15 is also rotated. But the ventilating fan and the ejector fanare not always driven with the shaft 3 but may be connected to the shaft3 or disconnected therefrom at will, by mechanism which I will nowdescribe.

Secured to the shaft 3, below the opening 15, are two friction cones 6and 6 v The body 13 of the ejector fan is secured to the lower end of asleeve 2 which'is rotatable on the shaft 3, the upper end of said sleevebeing secured at 4 to the inner forked end of a lever 47 which is ivotedat 51 to a suitable support. Said ever is normally held in the positionshown in Fig. 1 by a spring 50. The outer end of said lever is connectedby a chain 49, running over pulleys 48, with a slide 52 (see Fig. 2)mounted on an upright are adjustably secured'in the brackets 28 by 1portion of the supporting frame 1. Said upright portion is formed withrack teeth to be engaged by a pawl 52*, mounted in said slide andpressed. toward the rack by a spring 52". Said pawl is connected by alink 52 with a knob or handle 52. .This structure is such that, by meansof the knob or handle 52 the pawl 52 may be engaged with or disengagedfrom the rack, and the slide 52 adjusted so that, by means of the chain49, the lever 47 may be actuated to adjust the vertical position of thesleeve 2 and the ejector fan so as to disengage it from or connect itwith the upper friction cone 6 on the shaft 3. This permits the ejectorfan to be put into or out of operation.

The ventilating fan below the ejector fan comprises a body 5 having arms2, to which are secured the plates or wings 2. The body 5 is formed withan internal cone to engage the driving cone 6 and is carried at theupper end of a sleeve 43 mounted on the shaft 3. To said sleeve isconnected a bridge piece 7, the ends of which are connected by means ofcouplings 39 and 41, to plungers 8 .mounted in cylinders 9, the latterbeing supported by the frame 1. Springs 54 in the cylinders 9 act uponthe plungers to hold the bridge 7 and the sleeve 43 and the ventilatingfan in a raised position. The sleeve 43 is also connected to a sleeve 40which latter is provided with arms connected by rods 10 with a bracket12 having a key or handle 11.. By pullin down the said handle 11 thebracket is owered and the sleeve and bridge and fan are lowered toseparate the driving connection from the cone 6.. To keep the parts inthis position, a suitably shaped plate 45 is actuated by the handle 11to secure the mechanism so that the ventilating fan will not be actuatedby the shaft 3. Upon release of the handle, the springs in thecylinders, return the parts to operative position.

Referring to Figs. 1 and 3, the guide tube 30 is mounted in bracket 33,said tube extending into the lower part of the block 60, said,blockcontaining ball-bearings for the shaft 3. The block 60 is held by an arm35 which is secured to the fixed shaft 36 by a screw 29. Said tube 30also passes through disk caps or plates 31, 31, the upper one of whichis of a considerably greater diameter than the opening 15 in the roof,said caps and plates being secured to said tube by nuts 27 and 27 Anupwardly projecting flange 32 around the margin of the opening 13 guidesthe air escaping through the opening while the downwardly bent edges ofthe disk or plate 31 prevents the entrance of rain. Around the tube 30is a spiral spring 54 which normally presses the plate 31 upward. Butsaid plate can be lowered to bear on the flange 32 and close the passagefor air when desired. The mechanism for doing this comprises a lever 47pivoted at one end to bracket 33 and having its other end connected withthe tube by a pin and slot connection. A chain 49 is connected to thelever and passes around suitably mounted pulleys 48, the lower ends ofsaid chain (see Fig. 2) being connected to a slide 52 having anoperating knob or handle 52. The construction of this slide and themechanism for actuating it and holding it is substantially the same ashave been shown at the left in Fig. 2, as hereinbefore described. Byoperating said slide 52'" the position of the cap plate 31 relatively tothe flange 32 may be adjusted as desired.

Surrounding the opening 15 some distance outside the flange 32, is aprojecting ring 63 which prevents rain. or snow from being thrownagainst or over the flange 32. The wings 17 are preferably eonnectmltogether by a rin 24.

In Fig: 1, caps 21, 22 and 26 are shown as mounted in positions toprevent access of rain to the bearings and other parts below them.

The object and operation of the parts so far described having beenexplained in connection with the description of the structures thereof,further description of the operation of the entire mechanism will not berequired, further than to state that when the movement of the car onwhich the apparatus is mounted causes the air to impinge against. oneside of the wings 17 successively, or if the. apparatus is mounted on astationary building and wind actuates the wings 17, the gear 25 actuatesthe pinion 2. and drives the shaft 3. By engaging or disengaging eitherthe ejector fan or the ventilating fan with the frame or shaft 3, theapparatus may be caused to circulate air below the roof, or exhaust itthrough the opening 15, or both as may be desired.

Referring now to Figs. 5 and 7, it will be seen that the construction ofmost of the parts is the same as in the other figures omitting the fansand rotating shaft, but with the following explained dill'erences: 1\cover 21 is provided with threaded sockets R 'litting upper ends of therods 10 which are mounted in guides 39 secured to the projecting ring63, the latter being secured to the roof by screws passing through ears61. In this form, the guide tube 30, supported by the bracket 33 isprovided with holes adapted to receive hooks 54 depending from a sleevewhich carries cap plates 31. tube 30 is a rod 2", the upper end of whichis connected to the plate 31. The lower end of the rod 2 passes througha cap 14 at the lower end of the tube 30 and has a knob 52 connected. toit by a screw 27. A spring 54- bears at its upper end against a stop 61'and normally holds the plate 31 in the position shown in Fig. 5. Whenthe knob 52" is pulled, the rod 2 and the plate 31 are lowered, thehooks 54 engaging the openings in ithin the cam plate 46 which fits anangular portion of the rod, said cam plate lifting the slide 52 which ismounted within the tube 30. The slide 52 has upwardly extending portionsformed with openings E. The upward movement of the slide 52 causes theunder side of the o ening E to push the hooks outward and re ease themfrom the openings in the tube 30.

When the ventilator is in operation, the parts occupy the relativeositions best shown in Fig. 8 in which it W1 1 be seen that the bridge 7is disconnected from the annular projection or ring 43. ventilator isconnected with the friction cone 6 which is fixed to the shaft 3. Therotation of the shaft 3 actuates the body 5 and the blades or wingsradiating therefrom. At this time the rings or collars 46 secured to therods 10 are lowered by the camplate. 45. But the coil springs 54 aroundthe rods 10 hold the bridge or yoke 7 raised, thereby preventingfriction with the annular ring 43.

To stop the action of the ventilator the key 11 is given a quarter turnin either direction, carrying with it the cam plate 45. This raises therods 10 as shown in Fig. 9, and at the same time pulls down the rods 10and the bridge 7 through the action of the plate or bracket 12 bearingupon the collars shown at the lower ends of the rods 10. The bridge 7acts upon the annular projection 43 to pull down the body of theventilator, against the action of spring 54 in the sleeve 40, separatingthe body 5 of the ventilator from the driving cone 6.

Having now described my invention, what I claim is:--

1. A ventilating apparatus comprising a shaft, two fans adapted to beactuated by said shaft, a motor for said shaft, and means whereby eitherone or both of said fans may be operatively connected with said shaft.

2. A ventilating apparatus comprising a shaft having friction cones, amotor for said shaft, two fans loosely mounted on said shaft andadjustable lengthwise of the shaft to engage or disengage said cones,and means for adjusting said fans.

In a ventilator for railway-carsand the like, the combination with aframe secured to the underside of the roof of the car, said roof havingan air outlet, a ball-bearing supported by said frame, a vertical rotaryshaft journaled in said ball-bearing, a ventilating fan loosely mountedon the lower part of said vertical shaft, means for connecting said fanwith said shaft when desired, an ejectin fan also loosely mounted on theverticaI shaft above said ventilatingfan, means for The body 5 of theconnecting said ejecting fan with the vertical shaft when it is desired,a vertically movable cap arranged above said air outlet, means forguiding the same along the vertical shaft, means for lowering the sameupon the airoutlet, an air-motor arranged above .the roof of the car,andsuitable connections between -the air-motor and said vertical rotaryshaft to impart a rotary movement to the latter, substantially as setforth.

- 4.. In a ventilator for railway-cars andthe like, the combination witha frame secured to .the underside of the roof of the car, said roofhaving an air outlet, a ball-bearing supported by said frame, a verticalrotary shaft ournaled in said ball-bearing, a suitable ventilatorloosely mounted on the lower part of said vertical shaft, a frictioncone secured on the vertical shaft, a correspondingly recessed part onthe hub-body of said ventilator and adapted to be brought in frictionalengagement therewith, means for engaging and disengaging said arts whenit is desired, an air-ejector also oosely mounted on the vertical shaftabove' said ventilator and in said air outlet, means for connecting saidejector with the vertical shaft when desired, a vertically movable caparranged above said air-outlet, means for guiding the same along thevertical shaft, means for lowering the same upon the air-outlet tograduate the latter, an airmotor arranged above'the roof of the car, andsuitable connections between the airmotor and said vertical rotary shaftto impart a rotary movement .to the latter, substantially as set forth.

5. In a Ventilator for railway-cars and the like, the combination with aframe secured to the underside of the roof of the car, said roof havingan air outlet, a ball-bearing support ed by said frame, a verticalrotary shaft journaled in said ball bearing, a ventilator looselymounted on the lower part of said vertical shaft, a friction conesecuredon the vertical shaft, a correspondingly recessed part on the hub-bodyof said ventilator and I adapted to be brought in frictional engagementtherewith, means for enga ing and disengaging said-parts when desire( anair ejector also loosely mounted on said vertical shaft above saidventilator and in said air outlet, a friction cone secured on thevertical shaft below said ejector, a correspondingly re- -cessedextension on the hub-body of said ejector, adapted to be frictionallyengaged with said cone, means for lowering and raising the ejector intoand out of engagement with said Come when it is desired, a verticallymovable cap arranged above said air-outlet, means for guiding the samealong the vertical shaft, means for lowering the same upon theair-outlet to graduate the latter, an air-motor arranged above the roofof the car, and suitable connections between-the air-motor and saidvertical rotary shaft to impart a rotary movement to the latter,substantially as set forth.

6. In a ventilator for railway-cars and the like, the combination with aframe secured to the underside of the roof of the car, said roof havingan air outlet, a ball-bearing supported by said frame, a vertical rotaryshaft j ournaled in said ball bearing, a ventilator loosely mounted onthe lower part of said vertical shaft, a friction cone secured on thevertical shaft, a correspondingly recessed part on the hub-body of saidventilator and adapted to be brought in frictional engagement therewith,means for engaging-and disengaging said parts when desired, an airejector also loosely mounted on said vertical shaft above saidventilator and in said air outlet, a friction cone secured on thevertical shaft below said ejector, a correspondingly recessed extensionon the hub-body of said ejector adapted to be'frictionally engaged withsaid cone, a tubular upper extension on the hub of said ejector, apivoted double armed lever one end of which islinked to said extension,a traction spring pulling the opposite end of said lever constantlyupwardly, a chain attached to said lever, guide pulleys for said chain,a slide block on the frame of the apparatus, a projecting knob connectedwith said block and adapted to be moved up and down by hand, means foradjusting said knob and slide-block in the desired position, avertically movable cap arranged above said air-outlet, means for guidingthe same along the vertical shaft, means for lowering the same upon theair outlet to graduate the latter, an air-motor arranged above the roofof the car, and suitable connections between the air-motor and saidvertical rotary shaft to impart a rotary movement to the latter,substantially as set forth.

7. In a ventilator for railway-cars and the like, the combination with aframe secured to the underside of the roof of the car, said roof havingan air outlet, a ball-bearing supported by said frame, a vertical rotaryshaft journaled in said ball-bearing, a ventilator loosely mounted onthe lower part of said vertical shaft, a friction cone secured on thevertical shaft, a correspondingly recessed part on the hub body of saidventilator and adapted to be brought in frictional engagement therewith,means for engaging and disengaging said parts when desired, anairejector loosely mounted on said vertical shaft above said ventilatorand in said air-outlet a frictional cone secured on the vertical shaftbelow said ejector, a correspondingly recessed extension on the hub-bodyof said ejector adapted to be frictionally engaged with said cone, meansfor lowering and. raising the ejector into and out of engagement withsaid cone when desired, a movable cap arranged above said air-outlet andadapted to be moved vertically along the vertical rotary shaft, a guidesleeve around the latter below said cap, a coil spring fitted aroundsaid guide sleeve to normally hold the cap in its upper position astationary bracket, an arm pivoted on the same and pivotally connectedwith said cap, a chain attached to said arm, guide-pulleys for saidchain, a slide-block adapted to be moved up and down on a part of theframe, means for holding the same in adjusted positions, an airmotorarranged above the roof of the car, and suitable connections between theairmotor and said vertical rotary shaft to im part a rotary movement tothe latter, sub stantially as set forth.

8. In a ventilator for railway-cars and the like, the combination with aframe secured to the underside of the roof of the car, said roof havingan air outlet, a ball-bearing supported by said frame, a vertical rotaryshaft journaled in said ball-bearing, a ventilator loosely mounted onthe lower part of said vertical shaft, means for connecting saidventilator with said shaft when desired, an air ejector loosely mountedon the vertical shaft above said ventilator, and in said airoutlet meansfor connecting said ejector with the vertical shaft when desired, a vertically movable cap arranged above said air-outlet, means for guidingthe same along the vertical shaft, means for lowering the same upon theair-outlet to graduate the latter, a frame above the roof of the car, astationary vertical shaft in said frame and in close proximity to thevertical rotary shaft, an internal gear-wheel rotatably mounted on saidstationary shaft, a toothed pinion on the upper end of the rotary shaftand meshing with said gear wheel, a plurality of radially andhorizontally projecting arms on the hub of the latter, and fan-wingsattached to said arms, substantially as set forth.

9. In a ventilator for railwaywars and the like, the combination with aframe secured to the underside of the roof of the car, said roof havingan air outlet, a ball-bearing supported by said frame, a vertical rotaryshaft journaled in said ball-bearing, a ventilator loosely mounted onthe lower part of said vertical shaft, means for connecting saidventilator with said shaft when desired, an air ejector loosely mountedon the vertical shaft above said ventilator, and in said airoutlet meansfor connecting said ejector with the vertical shaft when desired, avertically movable cap arranged above said air-outlet, means for guidingthe same along the vertical shaft, means for lowering the same upon theair-outlet to graduate the latter, a frame above the roof of the car, astationary vertical shaft in said frame and in close proximity to therotary vertical shaft, an internal gear wheel rotatably mounted on saidstationary shaft, a toothed pmlon on the upper end of the rotary shaftand meshlng with sald gear- Wheel, a pluralityof radiallyandhorizontally In testimony whereof,I have signed my rojecting arms on thehub "of the latter, name to this specification in the presence of 19an-wings atticheil to said arms, fit threetwo subscribing witnesses.

armed rotary rac 6t mounte on t e upper 7 T 5 end of saidstationaryshaft, a vane attached LUDO I00 AG1\A I to one arm, a balanceWeightattached to the Witnesses:

second arm, and a wind shield attached to GOTTARDO C. PIRQNI,

the third arm, substantially as set forth/ E. BERTOLIN.

